nonextant

An adjective meaning no longer existing or surviving; extinct or lost.

• 🇨🇳形容词，指不再存在或没有留存下来的；已灭绝的或已遗失的。

1. No longer existing C2 formal

   Something that has ceased to exist, often referring to species, documents, or objects that have been lost or destroyed.

   • The ancient manuscript is now nonextant, with no copies remaining.
   • Many species from the Jurassic period are nonextant.
   • The original building is nonextant, having been demolished decades ago.

   🇨🇳已不存在的

   同义词: deaddefunctextinctgonelostobsoletevanished

   反义词: existingextantliving

2. Inaccessible or destroyed C2 formal

   No longer available or accessible due to loss, destruction, or disappearance.

   • The records from that era are nonextant, leaving historians with only fragments.
   • The painting is nonextant, believed to have been destroyed in a fire.
   • The nonextant documents were referenced only in secondary sources.

   🇨🇳已不存在的

   同义词: defunctdestroyedextinctgonelostvanished

   反义词: accessibleavailableexistingextant